BenQ MP611 Product Service Manual page 29

2.7 Pond of mirrors (POM)
POM is a rectangular array of off-state mirrors surrounding the active area.
2.8 Eyecatcher
Eyecatcher's are blemishes appearing in the area outside of the Active Area. These are
due to particles and various DMD window or window aperture "defects" including:
digs, voids, and scratches.
2.9 Border Artifacts
Border artifacts are a general category of image artifacts that may show up on screen in
the area outside of the active array. Border artifacts include: Exposed Bond Wires,
Exposed Metal 2, and Reflective Edge.
2.9.1 Bond Wires
Bond Wires are the electrical connections between the die and the DMD ceramic
package. If visible, they will appear as short light parallel lines outside of the
Pond of Mirrors (POM).
2.9.2 Exposed Metal 2
Exposed Metal 2 is due to a shift in positioning of either the die or the window
aperture, which may allow light to be reflected off of the layer of metal 2 that is
below the super structure (mirrors). This defect is located outside of the POM.
2.9.3 Reflective Edge
Reflective Edge is light that may reflect from the edge of the DMD window
aperture onto the projection screen. It will appear as a thin diffuse line outside of
the POM.
2.10 Blue 60 Screen
The Blue 60 screen is used to test for major dark blemishes. All areas of the screen are
colored a Microsoft Paintbrush blue 60 (green and red set at 0, blue set at 60).
NOTE: If linear degamma is not used then the Microsoft Paintbrush values must be
adjusted to match the degamma table being used in order to generate an equivalent blue
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